Quote:
Originally Posted by Luches
There is no such thing as a "ppm test pen", at least to my knowledge. PPM of every element varies and hence cannot be measured (unlike EC) as a total concentration. PPM can only be calculated accurately from each element's molecular weight and content in a raw material or component. If you are looking for EC or TDS Meter (instrument), you should make your own online search specifically for your country, region and your own currency...
Sorry to be that blunt, Dear - but this is actually not the lazy people's hotline! 
I am willing to answer any decently formulated (and basically intelligible) question though, that can not be found or googled easily and in a minute. 
Thanks for the understanding. |
my country i dun see any people planting hydropincs